| Year | 1918 |
| Date | 19-Sep |
| Volume | 39 |
| Issue | 908 |
| Page | 157 |
| Category | General |
| Part | |
| Title | Engineering and Invention Notes |
| Author | |
| Notes | Patent Applications Increasing in Number. Training American Youth in War Technics. Temperature & Time-keeping. Removing Temper from Hardened Steel. New Insulator. Japanese Electric Progress. Alcohol Motors. Using Electricity to Aid Crop Growth |